The University of Minnesota Extension study uses economic modeling to try to get at the ripple effects of the fast-moving virus that has killed some 8 million birds in Minnesota in the past couple of months.

Senior analyst Brigid Tuck's projections are through May 11. She focused on the 80 counties away from the metro area, where almost all of the state's poultry is produced. Tuck said the industry that provides feed for turkeys and chickens will be hardest hit.